Pingfang — Forgotten Register of Unit 731
Uncover the Forgotten Register of Unit 731, hidden amid the ruins. Decipher clues from labs, prisons, and incineration pits to expose the lost names of victims and unravel the darkest WWII biological conspiracy.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the frozen shadows of Pingfang District, Harbin, the Japanese Imperial Army built Unit 731—a secret fortress of horror from 1936 to 1945
Pingfang — Forgotten Register of Unit 731
You are a special investigator for the International Commission for War Crimes, dispatched to Harbin, China, in the late 1990s.
In the frozen shadows of Pingfang District, the
The Oath of Silence Broken — A Cry for Truth
« Let us never forget the past, for it is by confronting it that we forge a just future. »— Nanjing Memorial, wall inscription
The Hidden Sufferings of Manchukuo
The Japanese occupation of Manchuria from 1931 to 1945 was marked by brutal repression and massive human rights violations. The puppet regime of Manchukuo, established by Japan, served as a cover for numerous atrocities, among them the activities of Unit 731. Thousands of Chinese, Korean, Russian, and Mongolian civilians were abducted and subjected to horrific medical experiments, ranging from vivisection to biological weapons tests. The existence of this unit was long denied by the Japanese government, and survivors' accounts have been crucial in revealing the extent of these crimes.
The quest for truth about Unit 731 was a long struggle. After the war, the data collected by Ishii and his team were exchanged for immunity, depriving victims and their families of justice. Today, although the Pingfang museum serves as a poignant reminder, many individual stories remain to be uncovered, and full recognition of these crimes remains a necessity for collective memory and the prevention of such horrors in the future. Harbin, a witness to this period, offers places where these memories can be sought and honored.
How does it work?
Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.
No app to download. Play directly from your browser. Guided step by step, at your own pace.
One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.
Point your phone at the façade: a historical character appears and speaks to you in your language. Golden letters magically write themselves on the wall to reveal the puzzle answer.
Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.
French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.
Want to go deeper?
Places tied to your adventure — optional entries, totally up to you · per person
The Route
5-10 curated sites across the territory
The gameplay: AR, camera, hidden clues
At each stop, open your phone camera: an augmented reality character appears on the façade and speaks your language. Hunt the clue — it materializes as golden letters on the real wall or floats in front of you. When you find it, the phone vibrates, an AR chest opens and reveals your answer fragment. 8 stops, 8 clues to find with the camera, 1 final code.
The stops on your route are a surprise. You'll discover them one by one, guided by your phone, starting from the meeting point.
How does it work with a group?
One phone = one team. Pick the number at checkout (1 to 10).
Solo, or a group sharing the screen. One team, one code.
Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.
Friends, bachelor/bachelorette, small office outing — each their own code, each plays at their own pace. Tiered pricing then €6 flat per phone from the 6th.
- ✓All codes are independent — play at the same time OR separately, each team advances at its own pace.
- ✓Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
- ✓More than 10 phones or need a personalized quest? Discover custom tours.
Ready to live this adventure?
Get my code · 14,90€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Search for Secret Documents
Track down a clandestine register and decipher the information it contains for posterity.
Tribute to Forgotten Victims
Help honor the memory of those whose names and stories have been erased.
Traces of a Heroic Dissident
Follow in the footsteps of a brave witness who risked his life for the truth.
Names are only forgotten if no one speaks them anymore.
Give a voice to the silences of history.
9 features nobody else has
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
AR treasure chest
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
AR narrator character
Point your phone at the façade: a knight, witch, monk, sailor, detective or ghost appears full-screen and speaks to you in your language with their dedicated ElevenLabs voice (each character has their own unique voice) — your living guide.
Magic golden letters
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
Written + audio narration
Every puzzle available as text AND voice-over: read at your own pace or listen eyes-free while walking. Great in groups and for accessibility.
360° radar + vibration
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Heritage storytelling
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
Progressive AI hints
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
AR selfie memento
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
Zero app to install
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
Frequently asked questions
Q01Do I need to download an app?
No, never. You get a link, you click, it plays in your browser. That's the point of a PWA: same as an app, without the hassle.
Q02Does it work offline?
GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.
Q03How long does a game take?
1 h 30 to 2 h 30 depending on your pace. The timer runs but only for the leaderboard — you play at your own tempo.
Q04What happens if I'm stuck?
You get 3 levels of hints per puzzle (increasing penalty). If truly stuck, you can skip the step (45-min penalty but you keep going).
Q05What's the age range?
From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.
Q06What if my city isn't in the catalogue?
Pre-register or contact us — we'll email you as soon as your city is live.
Q07What is augmented reality exactly?
Point your phone at the façade: a historical character appears full-screen and speaks to you in your language. At the puzzle climax, golden letters magically write themselves on the real wall — that's your answer. After each puzzle solved, a treasure chest floats in front of you. Seeing is believing.
Avis des aventuriers
Soyez le premier à partager votre expérience.
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Your turn to play
Embark on this moving quest to retrieve hidden truths. The 'Register of Shadows' awaits its savior. Will you be the one to restore dignity to the forgotten?
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
🔒Secure payment · Code in 5 min · Free cancellation
🪙+24 TripCoins granted with your booking
Other escape games in Daoli District, Harbin
See all games in Daoli District, Harbin→More ideas for self-guided walking tours, scavenger hunts & city quests in the same city
Harbin — The Archives of Silence
Uncover the hidden Archives of Silence in Harbin's frozen streets. Decipher clues from Unit 731's atrocities, expose the buried secrets before they vanish forever.
Harbin — Echoes of the Forgotten
Uncover the silenced voices of Unit 731 victims. Decipher clues hidden across forgotten sites to expose the atrocities and recover lost testimonies before they vanish forever.
Pingfang — The Broken Oath
Uncover the broken oath of Unit 731's commander in Pingfang. Decode clues from ruins, labs, and prisons to expose the hidden archives of Japan's secret germ warfare atrocities before they vanish forever.
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